kirby / apple2ts

Apple II Emulator in TypeScript

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Apple II Emulator in Typescript - Chris Torrence, 2022

node.js CI build/deploy

This project was bootstrapped with Create React App.

Available NPM Scripts

In the project directory, you can run:

npm install

npm start

Runs the app in the development mode.
Open http://localhost:6502 to view it in your browser.

The page will reload when you make changes.
You may also see any lint errors in the console.

npm test

Launches the test runner in the interactive watch mode.
See the section about running tests for more information.

npm run build

Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.

The build is minified and the filenames include the hashes.
Your app is ready to be deployed!

See the section about deployment for more information.

npm run eject

Note: this is a one-way operation. Once you eject, you can't go back!

If you aren't satisfied with the build tool and configuration choices, you can eject at any time. This command will remove the single build dependency from your project.

Instead, it will copy all the configuration files and the transitive dependencies (webpack, Babel, ESLint, etc) right into your project so you have full control over them. All of the commands except eject will still work, but they will point to the copied scripts so you can tweak them. At this point you're on your own.

You don't have to ever use eject. The curated feature set is suitable for small and middle deployments, and you shouldn't feel obligated to use this feature. However we understand that this tool wouldn't be useful if you couldn't customize it when you are ready for it.

VS Code Chrome Debugging

Stop all running Chrome instances and then:

/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --remote-debugging-port=9222

Use npm start to start the running instance.

In launch.json, add a launch configuration:

    {
      "name": "Attach to Chrome",
      "port": 9222,
      "request": "attach",
      "type": "chrome",
      "url": "http://localhost:6502",
      "webRoot": "${workspaceFolder}"
    },

Apple II ROMs

This repository doesn't contain any Apple II ROMs. However, these are fairly easy to find on the web. To make a ROM image, save the raw binary data from the C000-FFFF ROM in a single file. Then convert the file to a Base64 encoding. On the Mac, I used the following command:

openssl base64 -in rom_2e.bin -out rom_2e.base64.ts

Finally, edit the .ts file, and change the file to be an exported string variable by prepending:

export const rom=`

Don't forget to append the trailing back quote ` at the end of the file. Your final file should look like:

export const rom=`AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAAAAAAAAAAAACxY/3AMOJAYuFAGATGOlJeahSeGNYpImEgIeI3/zyBY
...
SLnj/0ilMaAAhDFgvLK+mu/E7Km7pqQGlQcCBfAA65Onxpmyyb7wNYzWlq8XFysf
g39dzLX8Fxf1A/sDYvr6ww==`

Apple II 6502 References

NMOS 6502 Opcodes

6502 Programmers Reference

Assembly Lines: The Complete Book

Flowcharts for Apple II Emulator

Apple II Emulator - Layout

Apple II Emulator - Main Loop

Process Instruction

ProcessDisplay

Create React App - Learn More

You can learn more in the Create React App documentation.

To learn React, check out the React documentation.

Code Splitting

This section has moved here: https://facebook.github.io/create-react-app/docs/code-splitting

Analyzing the Bundle Size

This section has moved here: https://facebook.github.io/create-react-app/docs/analyzing-the-bundle-size

Making a Progressive Web App

This section has moved here: https://facebook.github.io/create-react-app/docs/making-a-progressive-web-app

Advanced Configuration

This section has moved here: https://facebook.github.io/create-react-app/docs/advanced-configuration

Deployment

This section has moved here: https://facebook.github.io/create-react-app/docs/deployment

https://www.kevinhooke.com/2022/11/10/gp-pages-deploy-fails-when-run-from-github-action-author-identity-unknown/

npm run build fails to minify

This section has moved here: https://facebook.github.io/create-react-app/docs/troubleshooting#npm-run-build-fails-to-minify

About

Apple II Emulator in TypeScript

License:MIT License


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